Improved apparatus for rolling- metals



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ROBERT-MARSDEN, OF SHEFFIELD, ENGLAND.

Letters Patent No. 83,718, dated Normnber 3, 1868; patented inyEng/land., lllafrclt 13, 1865.

IMPROVED APPARATUS kIll-"OEI ROLLING METALS.

The Schedule referred to in these Letters Patent and making peut of lthesame.

To all whom. Iit may concern:

Be it known that I, ROBERT 'BL-insonni, ofbheiiield, in the county ofYork, England, have invented certain Improvements in Machinery orapparatus for Rolling, Shaping, or Forging Metals; and I do herebydeL-lare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying lhawings, making partof this speciu'cation, in which- Figure 1 is a front elevation of myimproved machinery; v

Figlu'e 2 is an end elevation of the saine;

Figure 3 is a transrerse section; and

Figures 4, 5, 6, 7, 8, 9, and 10 are views of some of the partsdetached.

Similar letters or numbers, in all the iigures, refer to similarI parts.4

rIhis invention relates more especially to the rolling of steel, forproducing blanks for tiles, carriage-springs, and various articles oi'cutlery, such as pen and pocketblades, table-knife blades, andv similararticles.

To enable others skilled in the art to make and use my invention, I willproceed to describe the same, as follows:

In constructing the die-roll, which, in the present instance, is'designed to shape the leaves of elliptic springs, I take adisk orcircular plate of steel, of the requisite diameter and thickness toreceive a counterpart, either in whole or in part, of the article orarti cles to be produced, and form, by filing or turning, or by othermeans, upon this rst disk the counterpart or counterparts of so much ofthem as may be desired.

I then take two other disks or plates of steel, of the requisite size,and lit them Very accurately, one to each side of the first disk, andthen screw them all firmly together, and thus complete the firstprincipal or bottom roll,

In gs. 1 and 4, E represents the first disk, ,shaped or wrought so as toform the counterpart of three plates or pieces, such as are used in themanufacture of springs for railway-carriages, and it will be seen, byiig. 4, that the disk E is shaped so as to taper the ends, and, by meansof theprojections a a, to form the eye, to receive the steadying-pin,,upon the succeeding plates, which will be more clearlyseen in thesection, tig. 5, showing part of a railway-carriage spring.

In fig. 6, o shows the central disk, modified in its contour, so as toproduce a blank for a file, while Nos., 16 and 17 show the manner inwhichy the two outer disks are fitted to the central disk.

Having completed, in the above manner, the first or principal roll, Itake another disk of steel, of the size required to correspond with andtake so much of the counterpart or pattern as was deficient in the firstdisk, after which the central disk and side plates are screwed or boltedtogether, as in the former example, thus making, in connection with theformer roll, a pair of complete rolls. The manner in which this isperformed will be seen by referring to F, iig. 4, and to d, iig. 6.

After the parts of each roll have been completed, they should behardened and tempered, and they are then 'ready to be attached to theshaft or axle, to he driven and used as an ordinary-Y pair of rolls, asis shown at E and F, iig. 1.

[n some cases, each roll will consist ofonly two disks or plates,instead of three disks or plates, according to the requirements ofthepattern or article to beproduced.

When there is likely to be a greater amount ofwear upon some parts ofthe roll than upon others, as in the manuihcture of blanks for flics, Iinsert a movable piece or boss, shown full size in iig. 9, and reducedat No. Z1 in tig. o, which piece or boss will take as much of tl iepattern as may be required, and can be replaced, when injured or worn,without detriment to the other part of the roll.

For carriage or other springs, or whenever it may be desired, I alsoadopt another plan; that is to say, I take an ordinary roll, ofthe sizerequired, and cut or sink upon the face or circumference, by turning orotherwise, a true counterpart of the spring to be produced. For longsprings, simply sink or cut one such pattern, and, for shorter springs,I cut two, three, or more patterns, according to the circumference ofthe roll, siniilar to what is shown at E, fig. 4.

As each pair of rolls will be required to be of diferent diameters, soas to bring into correspondence the patterns impressed upon them,something different from the ordinary driving-gear must be employed, inorder to accommodate the different diameters of the rolls. I accomplishthis object in the following manner:

To the axle or shaft C, figs. 1 and 3, which carries the principal orbottom roll, I X a smball toothed wheel, H, and fix a similar wheel, H1,to the axle or shaft I), which carries the top or second roll. Uponsmall counter-shafts, Nos. 5 and 6, fig. 3, I attach or fix othertoothed wheels, H2 H3, of the same size, one of which counter-shaftsworks in steps or boxes, No. 8, cast upon the standard B, iig. 3, andthe other shaft works in bearings in the connecting-loops or rods 7 7,but looseat the ends. rIhc.said connecting-loops or rods bring the threewheels, IIl H2 H3 into gear, and secure'- the three. axles or shaftstogether, so that, whatever may be the size of the rolls within certainlimits, the whole of the toothed wheels will always remain in gear, asshown in iig. 3.

rIo prevent the toothed wheels om going too deep into gear, I placesmall rollers, No. 4, fig. 10, upon the three shafts I), 5, and 6,connected together by the loops or rods.

To prevent lateral motion, I use the collar and set screw 9, iig. 1, onshaft G, and, for the top shaft, D,

the washer and check-nuts, marked 10, 11, 11, shown in said figure.

Having described the parts in detail, l will now gire a generaldescription of the whole.

ln rigs. l., 2, and 3, A'represents the bed-plate, upon which the wholemachine stands; B B, the standards or frames, which support thediti'erent shafts; C, the bottom shaft., carrying the bottom orprincipal roll, E; D, the top shait, carrying the top or second roll, F.

G, iigs. 1 and 2, is a strong iron strap or coupler, to supportthelprojecting ends of the shafts G and ll),

, and to assist the screws passing` through the top of vdeeply mto gear.

13, l, are the steps or boxes in which the two principal shaft-s work,which steps or boxes are made of iron, and case-hardened, and areaccurately fitted to the shafts, and also to the openings on thestandards B, in which they :u'e required to be placed.

Nos. 9, 10, and 11,'tig. '1, are collars and checli-nuts,

v to hold the shafts to their places.

No. 22, iigs. l and 3,lis a large spur-wheel, with a small wheel, 23,geared into it. 24 is the ily-wheel. 25 is the loose pulley anddriving-drum, by which the whole machinery is put in motion. Nos. 19 and20, iig. 2, are standards for supportingtables, for guidingr the bars toand 'om the rolls.

The devices numbered 22, 23, 24, and 25 may be dispensed with, and themachine coupled, if advisable, by the end ofthe shaft C, to an ordinarytrain of rolls.

By reference to 8 will be seen the manner in which the inner plate ordisk is formed,1 with the opening to receive the boss or movable piece,represented in iig. i), while iig. 7 shows, at No. 14, the manner inwhich the boss or movable piece is sunk in the outer plate, No. 16, thewhole being shown in position, iig. 6, where the boss is marked 21..

ln iig. 1, the disk E, placed against the inside of the plate 2, showsthe manner in which the tapering form is given to the end oi' thespring-plates, iig. 5, and which 'may be made to extend to any distancealong the plate, while the small projections a, iigs. 1 and 4, show themanner in which the eyeletsare formed in the under part of the spring,to receivethe steadyingpin of the next succeeding plate.

- In the upper disk, F, iigs. 1 and 4, there are small cavities, b, intowhich the metal is pressed, as it passes through the rolls, for makingthe steadying-pins on the upper side of the plate or spring at the sametime, and corresponding with the cavity or eyelet formed by the'projections on' the bottom disk or roll, both of which are shown, inthe section of a spling, at fig. 5.

Having now described the nature and particulars of my invention, and themanner in which the same is to be performed, I desire it to beunderstood that I ela-im as my invention- The mode described ofcombining the two shafts by means of the toothed wheels, aud rollers,and countershafts, connected by loops or rods, substantially asspeeiiied.

In witness whereof, I, the said ROBERT MARSDEN, have hereto set my hand,this 1st day of December, A D. 1865. n

. ROBT. MARSDEN.

Witnesses:

Wu. H. SMITH, J osEPH WOLSTENHOLME.

